ST has built a new architecture to reach best-in-class ultra-low-power figures thanks to its high flexibility.
STM32L4 MCUs have scored 123 (world record) in the standardized EEMBC™
ULPBench® tests that compare the efficiency of ultra-low-power
microcontrollers.
Moreover, the STM32L4 series shatters performance limits in the ultra-low-power world.
It delivers 100 DMIPS based on its ARM® Cortex®-M4 core with FPU and ST ART Accelerator™ at 80 MHz.

A complete set of training modules
that provide a technical description of all the STM32L4 features
including peripherals and development tools organized into specific
sections: system, memory, security, analog, peripherals, watchdog and
timers and ecosystem.

STM32 Nucleo-64 development board with STM32L476RGT6 MCU, supports Arduino and ST morpho connectivity.The STM32 Nucleo board provides
an affordable and flexible way for users to try out new ideas and build
prototypes with any STM32 microcontroller line, choosing from the
various combinations of performance, power consumption and features.
The Arduino™ connectivity support and ST Morpho headers make it easy to
expand the functionality of the STM32 Nucleo open development platform
with a wide choice of specialized shields. An ST-LINK/V2-1 is integrated on the board, as embedded in-circuit debugger and programmer for the STM32 MCU and USB Virtual Com Port bridge.The STM32 Nucleo board comes
with the STM32 comprehensive software HAL library together with various
packaged software examples, as well as direct access to mbed online
resources.

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STM32L4-Discovery

32L476GDISCOVERY - Discovery kit with STM32L476VG MCUThe 32L476GDISCOVERY helps users to develop and share applications with the STM32L4 ultra-low-power microcontrollers.
The Discovery kit combines STM32L476 features with LCD, LEDs, audio DAC, sensors (microphone, 3 axis gyroscope, 6 axis compass), joystick, USB OTG, Quad-SPI Flash memory, expansion and probing connectivity.
It includes an embedded Ammeter which measures the MCU consumption in low power modes.
An ST-LINK/V2-1 is integrated on the board, as embedded in-circuit debugger and programmer for the STM32 MCU and USB Virtual Com Port bridge.
An external board can be connected thanks to extension and probing connectors.

The Cortex-M family is an
ideal solution for ranges of compatible, easy to use embedded
devices such as microcontrollers (MCU) where different cost, power and
performance considerations must be made. Each processor delivers an
optimal trade-off for a broad embedded application range.

Cortex-M family processors
are
all binary upwards compatible, enabling software reuse and a seamless
progression from one Cortex-M processor to another.

The ARM Cortex™-M4 processor is the latest embedded processor by
ARM
specifically developed to address digital signal control markets that
demand an efficient, easy-to-use blend of control and signal processing
capabilities.The combination of
high-efficiency signal processing functionality with the low-power, low
cost and ease-of-use benefits of the Cortex-M family of processors is
designed to satisfy the emerging category of flexible solutions
specifically targeting the motor
control, automotive, power management, embedded audio and industrial automation markets.

The Cortex-M4 processor has been
designed with a large variety of highly efficient signal processing
features applicable to digital signal control markets. The Cortex-M4
processor features extended single-cycle
multiply-accumulate (MAC)
instructions, optimized SIMD arithmetic, saturating arithmetic
instructions and an optional single precision Floating Point Unit (FPU).
These features build upon the innovative technology that characterizes
the ARM Cortex-M series processors.